Valve.



C. F; LAUFER.

. VALVE.4 ABPLIOATLON' FILED MAY 22, 1911.1

1,028,747, 7 Patented 1.11m@ 4, 1912.

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UNITED sTATEs PATENT opi-nnen.A

CHRISTOPHER F. LAUFER, OF RICHMOND, CALIFORNIA, ASSIGNOR TO RENA B.

LAUFER, 0F RICHMOND, CALIFORNIA.

VALVE.

Specification of Letters Patent.

Patented June 4, 1912.

Application ld'May 22, 1911. Serial No. 628,710.

To all whom it 'may concern: Be it known that I, CHRISTOPHER F. LAUFER,a citizen of the United States, residing at Richmond, in the county ofContra Costa and State of California, have invented certain new anduseful Improvements in Valves, of which the following is a specication.

This invention relates to valves and particularly to that form of valveused in connection with boilers and has for its purpose to regulate theflow of water into a boiler.

One of the objects of the invention is to provide a valve of a compactnature which will prevent leakage while in use.

Another object of the invention is to provide an effective and durableconstruction which is composed of a few number of parts and which can bemanually operated.

In carrying out the objects of the invention generally stated above, itwill, of course, be understood that the essential features thereof aresusceptible to changes in detail and structural arrangements, onepreferred and practical embodiment of the invention being shown in theaccompanying drawings, wherein Figure 1 is a fragmentary centralvertical sectional view, constructed in accordance with this invention.Fig. 2 is a top plan view thereof. Fig. 3 is a plan view of the insideof the upper sect-ion of the valve.

Referring to the accompanying drawings by reference numerals it will beseen that the invention comprises a casing which is composed of twoseparable sections, comprising a valve body 4 and a valve bonnet 5. Thebody 4 of the valve is reduced and ex-` ternally threaded and the bonnetis provided with an internally threaded sleeve 6 adapted to engage thethreads of the body 4. The body 4 is provided with a chamber 7 having anoutlet 8. In order to attach the valve body to a boiler a reducedportion 9 is provided which is adapted to be engaged by a wrench.Projecting from this portion is an externally threaded extension l0which is screwed into the boiler.

A rotary disk valve 11 is seated on the valve body 4 and is providedwith a circular opening 12 Which may be brought into direct alinementwith the opening 8 of the valve body. The outer surface ofv the bonnet 5is provided with a raised portion 13 through which a large opening 14and a smaller opening 15 extend. The opening 14 is internally threadedand adapted to be engaged by a pipe 16 which is connected with a pump orinjector not shown. The inner surface of the valve bonnet is providedwith a recess 17 that forms a raised portion 18 around the openings 14and 15 and also forms an annular flange 19 against which the valve 11abuts.

The valve 11 is provided with a centrally located upwardly extendingprojection 2O which is provided with a polysided opening 21. Theprojection 20 is adapted to engage with the opening 15 and extends onlypartially therethrough so that it will be necessary Yto have a key forthe purpose of rotating the valve. The valve is also provided with apendent stem 22 having a transverse groove 23 for conveniently grindingthe valve. A key of this nature is shown which comprises a handle 24which has a laterally projecting portion 25 from which a polysided key26 projects, the said key being adapted to engage the opening21 of thevalve 11. A pairV of vstops 27`and 28 are formed on the upper surface ofthe valve bonnet 5 to limit the movement of the handle 24 when the sameis rotated.

It will be seen from the foregoing description that when it is desiredto admit water to theboiler the key 26 is inserted into the opening 21and then turned until the opening 12 of the valve comes in alinementwith the opening 24 of the valve bonnet and the flow of water canberegulated by only kpartially bringing the two openings in alinement. f il It also will be obvious from the foregoing description that the devicecan be very readily taken apart in order that the same may be cleanedor'to permit of the grinding of the valve disk.

Having thus described my invention, what I claim is A valve comprising ahollow body portion having a reduced threaded portion, an extensionleading from said body portion and provided with an openingcommunicating with the hollow central portion of said body portion, avalve resting upon said body portion and provided with an opening to oneside of its center, oppositely disposed stems. leading from the centerofv said valve, one being provided with a groove in its end and theother with a socket, a bonnet resting upon said val've, the side wallsof said bonnet into said last-mentioned opening' and into being threadedto engage the threads of said said socket to turn said valve. 10

lbody portion, said bonnet being provided In testimony whereof I affixmy signature I with an opening formed in alinement with in presence oftwo witnesses.

said extension andwith the opening of said: CHRISTOPHER F. LAUFER. valveand being also provided with an open- Vitnesses: l ing through whichsadlast mentioned stem F. P. SCHROEDER, i passes whereby an operating`tool may pass E. Gr. GRAY.

Copies of this patent may be obtained for five-cents each, by addressingtheA Commissioner of Patents,

Washington, D`. C. Y Y

